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DM8168 nand-flash-writer problem when fusing u-boot using CCS + nand-flash-writer.out....

we are developing DM8168custom board. When fusing 8-bit nand flash(k9f2g08u0b) using CCS + nand-flash-writer.out, the following errors occur....

we are investigating the nand-flash-writer source files after uncompressing nandflash.tar.gz file, there are nothing particular to modifying the source files.

Please, give me the hints to modify nand-flash-writer source files....

 

Starting NETRA NAND writer

----------------------
  NAND FLASH DETAILS
----------------------
 Device ID : 0xda
 Manufacture ID : 0xec
 Page Size : 2048 Bytes
 Spare Size : 64 Bytes
 Pages_Per_Block : 64
 Number_of_Blocks : 2048
 Device_width : 1 Byte
 DeviceSize : 256 MB

 Setting the ECC scheme
  Set the BCH 8 bit ECC scheme  .... done
Preparing to Flash image ....
Opening image ... done.
Erasing Required Blocks [start = 0, count = 2]...Done
Flashing image ...
Number of blocks needed for header and data: 0x2
Attempting to start write in block number 0x0.
Writing image data to Block 0 Page0x0
Verify failed. Attempting to clear page
Attempting to start write in block number 0x1.
Writing image data to Block 1 Page0x0
Verify failed. Attempting to clear page
Attempting to start write in block number 0x2.
Writing image data to Block 2 Page0x0
Verify failed. Attempting to clear page